Sheet-metal-straightening machine



Feb.. 2 1926.

G. W. LENTZ SHEET METAL STRAIGHTENING MACHINE Filed Jan. 154. 1923 ZSheots-Sheet l Y I4/Lam;

Gtromu Feb. 2 ,1926. 1,571,207

G. W. LENTZ SHEET METAL STRAIGHTENING 'MAHINp Filed Jan. 15] 192s lil lli-

Patented Fehr 2, lgd,

narran narrar anni GEORGE W. LENTZ, Ulti* NTQT, QEJE, ASSGNR T@ NTED ALLOY STEEL CORPW- THON, F CA'N'JTN, @Ela A CRPORATION OF NEW YORK.

- SHEET-METAL-STRAIGHTENING MACHNE.

Application :filed January lli, 1923. Serial No. 612,743.

To all lwhom t may concern:

Be it known that l Gronau W. lhan'rz, a citizen ot the United gtates, residing at Canton, in the county of Stark and State or (lhio, have invented certain new and useful improvements in Sheet-Metal-Straightening Machines, oi which the dffollowing is a speci ication.

The invention relates 'te machines for straightening sheet metal, and more particu larly ter flattening and straightening erpanded metal sheets as they are delivered from an expanding machine; and the object of the. improvement is to provide means for adjusting the straightening rolls for more effective work on different kinds and conditions or expanded sheets.

r lhe cooperating series of rolls in a straightening machine are usually journaled in hearings in frames which may be adjusted directly to and from each other to vary the extent the peripheries oi the rolls of one series protrude toward or into the intervals hetween the rolls of the other series.

Bjr the present improvement means are provided for adjusting either one or both ends ont ene bearing trame vtoward and from the ether trame, and also for adjusting one trame longitudinally with respect to the other frame so as to vary the lateral proaimity of the rolls ci one series with respect to the rolls oit the other series.

A pair oi feed rolls are usually provided at the 'forward end or a straightening machine, and an additional feature of the present improvement is to provide means for adjusting the straightening rolls without 1nterfering with the adjustment of the feed rolls.

rllhe invention is illustrated in the accompanying drawings, forming part hereof, in which- Figure 1 is a side elevation of the straightening machine;

Fig. 2, a rear end elevation of the same;

lig. 3, an elevation section of the same, lookingforward on line 3 3, Fig. l;

Fig. al, a lower end view of a portion of the machine, as on line 4 4, Figs. 2 and 3;

Fig. 5, a fragmentary lower end view of the forward portion of. the machine, with the gear wheels omitted;

Fig. 6, a transverse section of the machine, looking upward, as on line 5 5, lgs. 2 and 3;

Figui, 'an enlargement oit the forward portion of the same, with parts broken away to show interior details; and

F ig. 8, an enlargement ofthe rear portion or the same, showing a part broken away to show interior details.

Similar nuinerals'refer to similar parts throughout the drawings.

4lhe machine may include a base 9, on which is mounted a stationary journal frame comprising a lower longitudinal bearing bracket 10, au upper longitudinal bracket l1, and upright connecting channels 12, with which is associated an .adjustable journal frame, comprising a lower longitudinal bearing plate 13, an upper longitudinal bearing plate 13, and upright connecting bars lll.

Bearings l5 are provided in the longitudi nal bearing brackets for journals 16 on the ends of one series of rollers l?, and bearings 15' are provided in the longitudinal bearing plates for journals 16 en the ends ef another series of cooperating rollers 1?",

A. beveled gear 13 is secured on the lower end oi each roller journal 16, which meshes with a corresponding" beveled gear 19 secured on a longitudinal shalt 20 journaled in bearings 21 and 21 mounted on the lower hearing bracket 10; upon the rear end of which shaft is secured a beveled gear 22 meshing with a beveled gear 23 secured on one end of a drive shaft 24, which shaft is journaled in a bearing 25 and has a pulley wheel 26 secured thereon, by means of which power is communicated to the machine.

A pair of feed rolls 27 and 27 is journaled in the upper and lower oearin1 brackets at the forward end of the machme, and upon protruding ends of their lower journals 28 and 28 are secured intermeshing gear wheels 29 and 29 foroperat-ing the feed rolls in unison; anda beveled gear 18 is also secured on the lower end of one of the journals 28, below the gear wheel 29, which meshesrwith a beveled ear 19p secured to the forward end of t e Shaft 20', by means of which the feed rolls are operated. s Y

A gear wheel 30 is secured on the pro! trading lower end of each journal 16', and an idle gear wheel 31, meshing with each pair of adjacent gear wheels 30, is journaled upon the head 32 of a bolt 33 secured to the lower bearing plate 13, by means of which ico all the straightening rolls 17 are operated in unison. f

An idle gear -wheel 31 is mounted upon the head 32 of a bolt 33 adjustably secured to the forward end of the lower bearing bracket 10; which gear wheel always meshes with the gear wheel on the lower end of the driven feed roll 27 and may be adjusted to mesh with the gear wheel 30 secured to the forward straightening roll 17, by means of which the power is communicated to the gearin which operates the straightenlng rolls 1%.

The bearing brackets 10 and 11 are provided with lateral extensions 10 and 11, the rear edges 34 of which are preferably beveled to form a socket 35 for receiving a toe 36 formed on the rear end of the bearing plates 13 and 13'; 10 and 11 is also provided with a pair ot laterally extending ears 37, between which is entered a tongue 38 extending forward from the outer side of the front end of each bearing plate 13 and 13. @ne ear 37 is provided with a free bore 39 and the other ear is provided with a tapped bore 39, and the intervening tongue 38 is provided with an enlarged opening 40; through which bores and opening a cap screw 41 is entered for clamping the tongue between the ears :tor securing the parts together.

The bearing brackets 10 and 11 are also each provided with a pair of ears 37' extending laterally from their forward ends, between which is entered a tongue 38 extending rearward from the inner side of the rear end of each bearing plate 13 and 13. One ears 37 is provided with a free bore 39 and the other ear is provided with a tapped bore 39 and the intervening tongue is provided with an enlarged opening 40; through which bores and openings a cap screw 41 is entered for clamping the tongue between the ears for securing the parts together.

The enlarged openings 40 are wider than the diameter of the shanks 41 of the cap screws, so as to permit a lateral adjustment of either one or both ends of the bearing plates 13 and 13with reference to the bearing brackets 10 and 11; and the openings are also elongated longitudinally, so as to permit a longitudinal adjustment of the bearing plates 13 and 13 with reference to the bearing brackets 10 and l1; by which means the rolls of each series may be adjusted toward and from each other, either in a and each extension parallel or in an inclined relation, and they may also be adjusted longitudinally with reference to each other, so as to vary the proximity of the rolls of one series to the rolls of the other series, thereby facilitating `the flattening and. straightening of an expanded sheet by varying the depth and length of the reverse -bends made thereinby the cooperating series of rolls. f

The opening 42 through which the shank of the bolt upon the head olwhich` the idle gear is journaled, is elongated lin the are of a circle concentric with the gear wheel 29, so that the idle gear may be adjusted to properly mesh with the forward gear wheel 30, to conform to an adjustment otthe bearing plates 13 and 13 and the rolls 17 und 17 journaled therein, while remaining in mesh with the gear wheel 29', rlhe journals 28 for one of the feed rolls 27 are preferably provided with a half box 43 bearing against a compression spring 4A held in position by a plug screw 45 to maintain a yielding pressure of the roll 27 toward the roll 27 for properly feeding sheets from an expanding machine t'o the straightening machine. A

l claim:

1. A sheet metal straightening machine including two bearing frames, a series ot rolls in each frame cooperating one with the other, and means for adjusting either one or both ends of a frame toward or from vthe other frame and also adjusting one frame longitudinallylwith reference to the other frame.

2. A sheet metalstraightening machine including two bearing frames, a series of straightening rolls in each frame cooperat` ing one with the other, and a pair of feed rolls in the end of one of the Jframes, and means oradjusting the other frame with reference to the one frame.

3. A sheet metal straightening machine including two bearing frames, a vseries of straightening rolls in each frame cooperating one with the other, a pair of feed rolls in one end of one of the frames, and means for adjusting the other frame with reference to the one frame, a chain o gears for operating all the rolls in the one frame, another chain of gears for operating the rolls in the other frame, and an adjustablev gear wheel intervening between the two chains of gears for operating one'from the other.'

GEORGE WQ LENTZ.

Mld 

